export{}

let params = {x:10,y:'abc'}

function f1(a:{x:number,y:string}){

}
// f1({
//     x:10,y:'aaa'
// })

function f2(a:typeof params) {

}
f2({
    x:11,y:'cc'
})

let obj:typeof params = {
    x:1010,
    y:'aaa'
}